Trouble with Vauxhall Insignia 2.0 diesel engine

I've been experiencing some issues with my Vauxhall Insignia's 2.0 diesel engine. It seems to be lacking power and there's a strange noise coming from the engine. Any ideas what could be causing this and how I can fix it?

Hi Emma, the trouble with your engine could be caused by a number of things. It's possible that your fuel filter and air filter are clogged, which can reduce engine performance and cause noise. I would recommend checking and replacing these filters if necessary.

Another potential issue could be a faulty turbocharger or a worn out turbo. This can also lead to a lack of power and unusual noises. I would suggest having your turbo checked by a professional mechanic.

It's also worth checking the condition of your engine's belts and pulleys. Over time, these can wear out and cause issues with engine performance. If you notice any fraying or cracks, it's best to have them replaced.